BocaTarga

Thanks!!! :D

Have a look at TSB 10/03 9110 Porsche Communication Management 2 - PCM2 (dated 05-25-04) -- Installing new generation PCM2. Only for vehicles with CD radio CDR23. You will need the correct trim pieces to match your car and you will need to have it turned on with a PST2 or PIWIS tester.

Sorry to be an amature, but how do I find this TSB? Haven't quite mastered this application and searching seems to not yield the results.

Thanks B)

Has anyone successfully installed the Dension Gateway 500 in a MY 2003 with a CDR23?

Does anyone know if this model radio (from a 2003 996 Targa) has an AUX input anywhere?

Also, should this model/year Targa have a microphone?

Thanks for any help!

I am in need of replacing my rear tires but upon reviewing the OEM specs I noticed that the front and rear have different tire wall sizes (i.e. Bridgestone Pontenza S-02A (Rear) 285/30 ZR18 (Front) 225/40 ZR18). The issue here is the 30 vs 40. Does anyone know why the front tires are bigger (40) than the rear (30)? Must I replace the rear with 30's or can I replace them with the same size (40) as the front?

Anyone know what Porsche was thinking about these two different sizes?

contact

BT,

Short answer is the larger rear tires ( lower profile) are to provide a larger patch ( traction) in the rear to compensate for the heavier weight distribution being in the rear of a rear engine porsche. The rolling diameter of the front and rear tires are the same.

Demosan

Sorry, but the "rolling diameter" is NOT the same. The diameter of the rear's are about 1/2 inch shorter. Check your own car using a level and measure to the pavement from the top of the tire. With the same diameter rims, which is OEM, it stands to be logical that the front's with a "/40" vs "/30" wall height would higher. I am not interesed in changing the rims since I do not intend to change tire width, but am wondering why the front's would be designed to us a higher wall, hence larger diameter?

BT,

You are correct that there may be a slight difference in "rolling diameter" in some of the standard factory fitments of tires, although the difference is not as significant as you think as the sidewall height is theortically calculated by the product of width and aspect ratio. For example, for my C4S, the standard tires are 295 x30 rears and 225 x40 fronts (18's both axles). The sidewall height of the fronts would be calculated as 225x.40 or 90mm. Rears sidewall height would be 295 x 30 or 88.5mm. SO you are correct there is a difference of 1.5mm, which is within the guidelines of being with 1-2% of theortical to ensure the AWD performance of the drivetrain is not compromised. I am not trying to sell myself as a tire fitment expert here as I had some of the same questions when I replaced the tires recently on my C4S. If you go to the tirerack.com website, there are several articles dealing with Pcar fitement issues that you may find helpful.

Regards, demosan :cheers:

Ok, thanks. You guys are great input. I appreciate the help.

Going with OEM specs.

Also if you check the wheel sizes are different too. It has nothing to do with the Targa style. You would have to get a new set of wheels to match the ones on the front so the wheels and tires match. The advantage would be to do a front to back tire rotation and the tires should last a bit longer. However you will loose alot of the handling and ride qualities. It makes more sense to do a little research into the tires and buy a set with a higher treadlife rating. For example the Bridgestone Potenza RE960AS Pole Position have a treadlife rating of 400 and are rated as AAA and should be about 800 for a set and the Bridgestone Potenza RE050A Pole Position have a treadlife rating of 140 and are also rated as AAA and a set of 4 should be about 950. The former should last about 2.5 times longer

BTW check out Value Tire in Hallandale, Florida. I use them and have sent a couple of other Porsche owners there. They usually have good prices. Call ahead to get a price.

Please see my response earlier. The wheel diameters are NOT the same. This is why I am puzzled.

If I am not mistaken, the "285/" and "225/" refer to the width. I am not interested in putting the same tire widths on front and back. I am interested in understanding why the difference in the tire "wall" heights. In other words I would like to put "285/40" on back instead of the recommended "285/30". This is not what is spec'ed and I wish someone could explain why?

Thanks

I am in need of replacing my rear tires but upon reviewing the OEM specs I noticed that the front and rear have different tire wall sizes (i.e. Bridgestone Pontenza S-02A (Rear) 285/30 ZR18 (Front) 225/40 ZR18). The issue here is the 30 vs 40. Does anyone know why the front tires are bigger (40) than the rear (30)? Must I replace the rear with 30's or can I replace them with the same size (40) as the front?

Anyone know what Porsche was thinking about these two different sizes?

contact

BT,

Short answer is the larger rear tires ( lower profile) are to provide a larger patch ( traction) in the rear to compensate for the heavier weight distribution being in the rear of a rear engine porsche. The rolling diameter of the front and rear tires are the same.

Demosan

Sorry, but the "rolling diameter" is NOT the same. The diameter of the rear's are about 1/2 inch shorter. Check your own car using a level and measure to the pavement from the top of the tire. With the same diameter rims, which is OEM, it stands to be logical that the front's with a "/40" vs "/30" wall height would higher. I am not interesed in changing the rims since I do not intend to change tire width, but am wondering why the front's would be designed to us a higher wall, hence larger diameter?

I am in need of replacing my rear tires but upon reviewing the OEM specs I noticed that the front and rear have different tire wall sizes (i.e. Bridgestone Pontenza S-02A (Rear) 285/30 ZR18 (Front) 225/40 ZR18). The issue here is the 30 vs 40. Does anyone know why the front tires are bigger (40) than the rear (30)? Must I replace the rear with 30's or can I replace them with the same size (40) as the front?

Anyone know what Porsche was thinking about these two different sizes?

Recently discovered that pressing the key-button quickly twice sometimes causes the horn to "beep" but not always. Is there anyone who has an understanding of this circuit function? It's not worth a service visit.

Have the same problem on my '03 Targa with only 7k miles. Has anyone looked into the Mercedes Benz "Anti Squeal Paste" for the CL 600???

Check with the guys at Sunset Imports in Portland. They set me up with the right one.

Well, finally got to the good guys at Champion Porsche and they repaired it in a few hours. Looks like it was the electric motor (#996-624-101-05). Must be some internal parts of the motor that were faulty. Good thing was, it was all warranty work!

:)

Well, based on all the information (thanks Loren) I decided that there was too much that could go wrong with a DIY on this one. I am going to visit the service guys at Champion to fix this.

Let you know what the damage comes out to be.

Thanks

Thanks Loren,

Now for the next series of questions - Where do I locate the Window Regulator? Is the door microswitch something for the DIY'er of would you recommend the Dealer?

Appreciate the help greatly.

Just started happening. When the door is opened with or without the key in the ignition, the window opens nearly half way. If you physically swing the door open, it opens all the way down. It's a pain because I have to keep the ignition on to close the window before I can get out of the car. Must be to coinside with the "Omen" I guess? Any ideas? Faulty relay somewhere?

Building on a great idea, here is a slight enhancement. So that I could change the battery and use the opener elsewhere, I incorporated the use of a mini-phonejack.

Also added the tail switch.

Got the switches from the great guys at Sunset Porsche (1-800-346-0182). Jeff Clark was a great help.

BTW - Does anyone know where I can get the connectors for these switches like the ones on the harness???

$22.57 from these guys is well worth having the right part.

Sunset Porsche 1-800-346-0182 toll free

attn: Jeff Clark 1-503-641-8600 local

4030 S.W. 139th way 1-503-601-3090 fax

Beaverton OR 97005

www.sunsetimports.com

link to our on-line secure order form:

http://www.sunsetimports.net/sorder.php

Nope. I picked up a 2003 with only 4500 miles for a steal!

Just got one from the guys in Portland for $22.

Sunset Porsche 1-800-346-0182 toll free

attn: Jeff Clark 1-503-641-8600 local

4030 S.W. 139th way 1-503-601-3090 fax

Beaverton OR 97005

www.sunsetimports.com

link to our on-line secure order form:

http://www.sunsetimports.net/sorder.php

I was searching for the 226 code also but got nowhere. The best guess was that it had to do with the 17in wheels. If you find out for sure, would you let me know?

Thanks

Thaks for the info. Appreciate it.

Thanks again. You're a wealth of info. From your diagram, I am only concerned with #1 prying the panel off carefully with a blunt instrument, correct? No hidden fastners to break???

Do you have any tricks or special instructions to removing the panel on a 2003?

See attached photo?

Thanks.

Thanks. Good stuff.

My 2003 996 Targa has a read Window Defrost switch but no elements on the window. I'd like to use the switch for something else (i.e. Garage Door Opener?). Is there somewhere that I can tap into this circuit easily? Relay in the fuse panel perhaps? Connector near the rear window somewhere? Any suggestions?